Combination-lock



E. BHUCKUP.

COMBINATION LOCK.

APPucATloN 111211111111311. 1920.

Patented Feb. 1,1921.

EJ. E.

@51j Quito/mam UNITED y STATES EDWARD BROCKUP, OF CARTERET, NEW JERSEY.

coMBINATIoNmooK.

Application iled June 30, 1920.

To all whom t may cof/wem:

Be it known that I, EDWARD BROCKUP, a citizen of Poland., residing at Carteret, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Combination-Locks, of which the following is a specification.

The main object of this invention is to provide a combination lock having a novel step-by-step opening means the sequence of the separate steps of which are known to the user of the `lock alone, the lock therefore being safe at all -times against unan thorized persons.

The above and other objects will become apparent in the description below, in which characters of reference refer to like-named 'parts in the drawings. y

Referring briefly to the drawings, Figure 1 is a side elevational view of my lock.

Fig. 2 is a plan view of the same.

Fig. 3 is a cross-sectional view taken on the line 3--3 of Fig. 1.

Fig. 4 is a cross-sectional view taken on the line4-4 of Fig. 1.

Fig. 5 is a plan view of one of the details of my lock.

Fig. 6 is a similar view of another of the details thereof.

Referring now in detail to the drawings, the numeral 1 represents the casing or frame of my lock, the same being widened, and substantially cylindrical, on each side at 3 and 4. A shackle 2 is slidably mounted in said frame, the legs 2'* and 2b thereof sliding within said cylindrical portions.

Horizontal circular extensions 16 project V from the side 4 and provide a plurality of equidistant spaces in which rings 5 lit and are adapted to be rotated. Each of said rings is provided with a recess 11 and a pin 9 resiliently mounted in a socket above a coiled spring 10, said pin normally projecting slightly beyond said Vsocket and said spring normally urging said pin outward from said socket. Each of the circular extensions 16 is provided with a plurality of equidistant recesses 17 adapted to receive the end of the pins 9.

Integral with the frame 1 and comprising the central or body portion of the side 4 is a tube-like member 23 having a channel therein in which the leg 2' lies. Said tube is provided with a slot 24 extending the entire length of the tube and passing Specification of Letters Patent.

Patented Feb. 1, 1921.

serial No. 393,207.

entirely through the wall thereof; said slot is of the same width as the recess 11.

The leg 2 of the shackle 2 is provided with a filler B having a plurality of spaced apart teeth 8 of a width slightly less than that of the slot 24, said teeth adapted to lie between the vertical planes, respectively, of the rings 5 when the shackle is in locked position. Said filler is secured in the leg 2a by means of rivets 7 passing through the leg and the filler.

A button 12 is slidably mounted on the top of the frame 1 and is attached to a spring 13 extending through the top of the frame into the interior thereof and being attached to the bottom thereof at 14. Near the upper end of the said spring is attached a latch 15, and on the same plane as said latch a recess 25 is provided in the leg 2b of the shackle 2. Obviously, the spring normally ur es the latch into engagement with the sai `recess 25, and in order to release the latch, the button 12 is moved slightly to the left (Fig. 1).

At the bottom of the interior of the tion 3 a spring 21 is situated, the leg 21 resting upon said spring and being normally urged upward thereby.

- Upon the outer periphery of each of the rings 5 are a number of letters, and upon the upper and lower ends of the portion 4 are indentations, or guides, 20. In the form of lock illustrated, the rings are so arranged and marked that, when the letters thereon are brought into the positions shown, that is, when the word Boston appears between the said guides, then the recesses 11 of all the rings are in alinement with the slot 24 and the teeth 8. Then it is a parent, the leg 2 ma be withdrawn. t this stage the button 12 is moved to the left, andthe leg 2b released whereupon the shackle 2 is released and raised by the spring 21.

I claim:

A device of the class described comprising a frame, a shackle slidably mounted therein, a plurality of spaced apart teeth extending from one leg of said shackle, a tubular member integral with one side of said frame, a slot extending the entire length of said member, a plurality of spaced apart circular extensions projecting from said member, a plurality of rings rotatably por-- mounted about said member between said..

Iextensions, a recess in each of said rings,

indicating characters on the outer peripheries o said rings, a plurality of pins resiliently mounted on said rings, aplurality of indentations on said extensions adapted to be engaged by said pins, a recess in the other of said legs, a latch resiliently mounted Within said frame and adapted to engage said recess in said leg, a button slidably mounted on the outside of said frame 10 and adapted to operate said latch, and means for normally urging said shackle outward from said frame.

In witness whereof I ax my signature.

EDWARD BROCKUP. 

